Abstract

To isomerizate of lycopene by ultra high pressure (UHP) method, based on single factor experiments, orthogonal test was used to optimum the isomerization conditions. UHP pressure, UHP holding time, temperature were as factors and ratio of cis-lycopene in total lycopene was as index. The results were as follows: 50°C, UHP pressure 500MPa and holding time 7min. The ratio of cis-lycopene in total lycopene was 45.1%. So UHP combine heating has a isomerization effect on lycopene.

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